Hauling with a mechanical advantage

especially when light-weight persons are involved in the climbing, the best
is to use 2 static lines
and a 2:1 pulley system. that means, the load to haul is 50 %.
For example. 80 kgs to haul means to haul really 42 kg (really pulley factor
= abaut 1,8),
which can be done by everyone on a big wall.
a very light person can counterweight-haul all that stuff, but needs a 4th
rope (which is the
2n lead line) as a rappel-line and jug-line in order to control and balance
out weight (not to shot down).

the advantage is to half the load, the disadvantage is on a straight 60 m
distance you have to haul 120 m of rope. but it is definitely better to haul
in more rope that get sucked and exhausted on the weights.
another advantage is the emergency case: used to the 2:1 pulley system you
can bring up an unconcious or
severly damaged partner to the belay or on the portaledge in a reasonable
speed.

for a lighter person it is much more energy saving to do more light body
hauls than to less body hauls with
hell weight on it, watch your waist and skin under your harness after
finishing such a iron-man hauling work.

here it pays to have a good strategy to do hauling on every 2nd pitch, if
possible.

but there is another point to watch carefully: the pulley roll at the
haulbags (2 rope going up) must be soundly protected against servere rock
contact and the force applied on it. here helps the 2-slot-rappeling device
put over the pulley roll protecting it.

start hauling with body or by counterweight
after 60 m hauled rope the bags are 30 m higher (jug up in case of
counterweighting).
arrange system to change ropes on wallhauler due to the knot showing up.
don't get lost of the first static line
continue same method hauling.

it s not to mention that to much foce applied in case of encountering a stop
during
hauling may lead to disaster (broken pulley-roll, severe damaged haulbags or
getting lost
of all the stuff). better be too careful in that situation.

when is it appropriate to apply the 2:1 system ?
a) hauling stuff has more than 40 kgs
b) hauling over slabs or other terrassed terrrain increasing the load by a
friction factor up to 1,6

i personally applied this system when climbing with my wife (55 kgs). due
to her
little weight she never had problems jugging up 2 times and enjoyed
counter-weight hauling.
in my case I applied body hauling on the 2:1 system applying a body force
for 30-40 kgs on
a load of 60 to 80 kgs.